-Don (Random stuff, mostly about trains - what else? http://blerfblog.blogspot.com/)
railvidios.net has several vidios of SD90mII 's running on B&P
these are leased power they seem to be running daily
link http://www.rail-videos.net/video/view.php?id=2361
oltmannd wrote: Allen Jenkins wrote: As for a smaller 4-cycle, I don't remember any info suggesting that.It was a well kept secret. I saw it once at LaGrange back in the early-mid 90s. Looked ALCo-ish.
Allen Jenkins wrote: As for a smaller 4-cycle, I don't remember any info suggesting that.
As for a smaller 4-cycle, I don't remember any info suggesting that.
It was a well kept secret. I saw it once at LaGrange back in the early-mid 90s. Looked ALCo-ish.
The original "H" engine was the 854H which was in developement during the early to mid 1990's. It was a 4 stroke design and was to be the replacement for the 710G. However, it was never intended to reach 6000hp (atleast not in a 16 cylinder version) and when interest in a 6000hp locomotive came about developement on a larger, more powerful engine began and the 854H fell to the wayside. The 265H was the end result. For what its worth, had they stuck with previous practice and labeled the engine by cubic inches per cylinder you would have the 1010H. Certainly a large leap over the 710G.
Bryan Jones
Brooks,KY
beaulieu wrote: nanaimo73 wrote: John, thanks for the post. beaulieu wrote: The next big improvement may be Permag AC Synchronous Motors. They will be lighter and smaller than current traction motors, improving cooling and reducing the unsprung mass in the trucks. Are these more likely to show up on GEs before EMDs?Dale, it's way too early to tell who will introduce them to North America, look at how long it took for asynchronous AC motors to go from testing to production. The first railroad sized Permag Synchronous motors were used under the coaches on the TGV that set the World Speed record. Their performance was so flawless that Alstom is going to use them in their new AGV which will replace the TGV. The motors will have to prove themselves in Europe before any North America company will take a hard look at them. EMD's weakness could prove their strength, in that they can no longer afford to develop most of their own heavy electrical gear. As you know Siemens produced the Invertors and Traction Motors for EMD's SD70MAC, SD80MAC, and SD90MAC locomotives. It appears that EMD and Siemens had a falling out as EMD's new SD70ACe uses Mitsubishi Invertors and Traction Motors. EMD's need to innovate and work with partners may work to its advantage, or it's possible that GE may go first, it's too early to guess.
nanaimo73 wrote: John, thanks for the post. beaulieu wrote: The next big improvement may be Permag AC Synchronous Motors. They will be lighter and smaller than current traction motors, improving cooling and reducing the unsprung mass in the trucks. Are these more likely to show up on GEs before EMDs?
John, thanks for the post.
beaulieu wrote: The next big improvement may be Permag AC Synchronous Motors. They will be lighter and smaller than current traction motors, improving cooling and reducing the unsprung mass in the trucks.
Are these more likely to show up on GEs before EMDs?
Dale, it's way too early to tell who will introduce them to North America, look at how long it took for asynchronous AC motors to go from testing to production. The first railroad sized Permag Synchronous motors were used under the coaches on the TGV that set the World Speed record. Their performance was so flawless that Alstom is going to use them in their new AGV which will replace the TGV. The motors will have to prove themselves in Europe before any North America company will take a hard look at them.
EMD's weakness could prove their strength, in that they can no longer afford to develop most of their own heavy electrical gear. As you know Siemens produced the Invertors and Traction Motors for EMD's SD70MAC, SD80MAC, and SD90MAC locomotives. It appears that EMD and Siemens had a falling out as EMD's new SD70ACe uses Mitsubishi Invertors and Traction Motors. EMD's need to innovate and work with partners may work to its advantage, or it's possible that GE may go first, it's too early to guess.
It's not true that EMD now uses Mitsubishi traction motors. When EMD was working with Siemens, the SD70MAC's and SD90MAC's used Siemens designed inverters and traction motors but all motors after the SD60MAC's were made in London by EMD. With the split from Siemens, EMD designed their own motor for use with the Mitsubishi inverter which is bigger than an SD70MAC motor but smaller than an SD90MAC motor. All motors are still made at the London plant.
It is also important to note that EMD wrote the inverter control software for the Mitsubishi inverters - this was a big sticking point with Siemens as they would not literally give up control of the inverters, which required Siemens to provide their computer in the inverter cabinet. The EM2000 now does all the loco control including inverters.
Dave
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